A005840 - OEIS

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A005840 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`1`
`2`		`2`
`3`		`8`
`4`		`46`
`5`		`332`
`6`		`2874`
`7`		`29024`
`8`		`334982`
`9`		`4349492`
`10`		`62749906`
`11`		`995818760`
`12`		`17239953438`
`13`		`323335939292`
`14`		`6530652186218`
`15`		`141326092842416`
`16`		`3262247252671414`
`17`		`80009274870905732`
`18`		`2077721713464798210`
`19`		`56952857434896699992`
`20`		`1643312099715631960910`

[1,1,2,8,46,332,2874,29024,334982,4349492, 62749906,995818760,17239953438,323335939292, 6530652186218,141326092842416,3262247252671414, 80009274870905732,2077721713464798210, 56952857434896699992,1643312099715631960910]

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Last modified April 25 05:18 EDT 2024. Contains 371964 sequences. (Running on oeis4.)